Solve for x. 7(x + 1) = 21
x = 2
x = 20/7
x = 22/7
x = 4

Answers

Answer 1
x= 2 because 7x+7=21, -7 and 7x=14
Answer 2
7x+7=21 
     -7  -7
7x=14
 divide 7 on both sides 
x=2

Related Questions

A stop sign is a regular octagon formed by cutting triangles off the corners of a square. if we have a square with sides of length square root 2, what is the side length of the resulting octagon

Answers

the answer is 3.5147 inches
Final answer:

The side length of the resulting octagon is 2√2.

Explanation:

A stop sign is a regular octagon formed by cutting triangles off the corners of a square. To find the side length of the resulting octagon, we can use the Pythagorean theorem. Since the square has sides of length √2, its diagonal can be found by multiplying its side length by √2. This gives us a diagonal length of 2√2. The diagonal of each triangle cut off the corners of the square will be the side length of the resulting octagon. So, the side length of the octagon is 2√2.

Which of these ratios is NOT in simplest form? 12/5 8/5 7/10 9/15

Answers

9/15, it can be simplified to 3/5
9/15
9     /  3  =  3
15   /  3  =  5

F. determine if (x + 3) is a factor of (x) = 2x3 + x2 –8x + 21 by using synthetic division. if so, find the other factors.

Answers

since its x + 3 we use -3


-3| 2      1      -8      21           (these are the # without the x)
___________________

            -6     15     -21      
-------------------------------
    2      -5      7        0               
 
Drag the 2 down, multiple it by -3 to get -6 
1+(-6) = -5. -5 * -3 =15 . 15+(-8) = 7
7*-3 = -21. -21 +21 = 0 
Since last # is 0 we have a factor.


 factor is 2x^2 -5x -7 (we start with a power 1 less the original.)


To make punch, Sophia mixes 2 liters of clear soda with 70 centiliters of cranberry juice and 236 milliliters of pineapple juice. How much punch does she have in total?

Answers

2.936L
0.236 + 0.7= 0.936

Which statements are true about the ordered pair (−4, 0) and the system of equations?
{2x+y=−8
x−y=−4
Select each correct answer.
The ordered pair (−4, 0) is a solution to the first equation because it makes the first equation true.
The ordered pair (−4, 0) is a solution to the second equation because it makes the second equation true.
The ordered pair (−4, 0) is not a solution to the system because it makes at least one of the equations false.
The ordered pair (−4, 0) is a solution to the system because it makes both equations true.

Answers

2x + y = -8        (-4, 0)
2(-4) + 0 = -8
-8 + 0 = -8
-8 = -8

x - y = -4       (-4, 0)
-4 - 0 = -4
-4 = -4

the ordered pair (-4, 0) is a solution to the system because it makes both equations true.

What do they call the guy who invented the first blue jeans

Answers

Answer:

Levi Strauss!

Step-by-step explanation:

By the 1860s, Levi Strauss's blue pants were daily wear for miners and farmers and cattlemen throughout the West. In 1873 he bought, for $69—the price of the patent application — an idea from a Russian immigrant tailor in Reno for making miner's pants stronger by riveting the critical seams.

Hope this helped!

As a student you are able to earn extra money by assisting your neighbors with odd jobs. If you charged $10.25 an hour for your assistance about how many hours would you need to work to earn $8,425

Answers

8425/10.25
821.9
It would take about 822 hours

For an hour of assistance if a student charged $10.25 than total number hours a student need to work to earn $8,425 is 821.95 hours and this can be determine by the help of unitary method.

Given :

Charge for 1 hour assistance = $10.25

Total earning through assistance = $8425

In this problem unitary method can be use to determine the total number of hours need to work to earn $8425. In unitary method, single unit value is determine first to evaluate the necessary value by multiplying the single unit value.

For an hour of assistance if a student charged $10.25 than total number hours a student need to work to earn $8,425 can be:

[tex]= \dfrac{8425}{10.25} \times 1[/tex]

= 821.95 hours

So a student need to work a total of 821.95 hours to earn $8425.

For more information, refer the link given below:

https://brainly.com/question/4725220

If 5(x+7)=-3, then 5x+35=-3

Answers

5(x+7)=-3
1st step: Distributive Property 
5x+35=-3
So, yes this is true.

A can of paint is 15 centimeters high and has a ddiameter of 13.6 cm. what is the volue of the can? Round to the nearest tenth.

Answers

Hello! A can is the shape of a cylinder. The formula for the volume of a cylinder is this: pi * r^2 * h. The radius is 1/2 of the diameter. Half of 13.6 is 6.8. 6.8^2 is 46.24. 46.24 * 15 is 693.6. Now, we can multiply by pi as 3.14. 693.6 * 3.14 is 2,177.904 or 2,177.9 when rounded to the nearest tenth. The volume of the cam is approximately 2,177.9 cubed centimeters.

Answer:

V=πr2h=π·6.8^2·15≈2179.00866

2179 cm^3  

Step-by-step explanation:

Two buses leave towns 1631km apart at the same time and travel toward each other. one bus travels 17 /kmh slower than the other. if they meet in 7 hours, what is the rate of each bus?

Answers

suppose one bus travels at x km/h, the second bus is 17 km/h slower so it is x-17
the first bus travels a total of 7x km, the second bus travels 7(x-17)km, together they travel the total distance of 1631 km
7x + 7(x-17) =1631
7x + 7x -119 =1631
14x=1750

x=125
x-17=108

When constructing parallel and perpendicular lines, how are the steps similar

Answers

The construction of parallel lines includes copying an angle by creating arcs with a compass.
When constructing parallel and perpendicular lines the steps are similar because they both include creating and connecting intersecting arcs.

A regular hexagon is shown.



What is the length of the apothem, rounded to the nearest inch? Recall that in a regular hexagon, the length of the radius is equal to the length of each side of the hexagon.
4 in.
5 in.
9 in.
11 in.

Answers

Since the triangle will be a 30-60-90, because 360°/6 = 60° for each central angle, then that is bisected to find the height of each of the 6 equilateral triangles. This height is the same as the apothem.
In a 30-60-90 triangle, the sides are is the ratio of:
[tex]x \: \\ x \sqrt{3} \\ and \: 2x[/tex]
where x is opposite the 30° and 2x is opposite the 90°
Since the base is 10 and the hypotenuse is 10, 1/2 that is 5 (the x), and so:
[tex]x \sqrt{3} = 5 \sqrt{3} = 8.66[/tex]
So rounded up, you apothem then is closest to D) 9 in.

The length of the apothem of a regular polygon that has a radius of 10 inches would be 9 inches .

What is the apothem of a regular polygon?

The apothem of a regular polygon is defined as a line segment from the center to the midpoint of one of its sides.

It is Given that the hexagon has a radius of 10 inches and the length of the radius is equal to the length of each side of the hexagon.

The apothem AB divides the side of the hexagon into two equal parts of 5 Inches.

Using Pythagoras Theorem

[tex]10^2 = 5^2 + AB^2\\AB^2 = 10^2 -5^2\\AB^2 = 100 - 25\\AB^2 = 75\\AB = \sqrt{75}[/tex]

AB = 8.66

So, rounded up, we get the apothem closest to D that is 9 in.

Learn more about the apothem;

https://brainly.com/question/16543461

#SPJ3

John Gray bought a basic car for $32,750.00, with options that cost $375.00. There's a 6% sales tax in his state and a combined $50.00 license and registration fee. What was John's total cost

Answers

$32,750.00 + $375.00 = $33,125.00
6% of that is $1,987.50 (33,125 x 0.06)
$1,987,50 + $33,125 + $50= 
$35,162.50

Answer:

The total cost of the car be $35162.5 .

Step-by-step explanation:

As given

John Gray bought a basic car for $32,750.00, with options that cost $375.00.

Cost of the car = Car cost + Option cost

                          =  $32750 + $375

                          = $33125

As given

There's a 6% sales tax in his state .

6% is written in the decimal form.

[tex]= \frac{6}{100}[/tex]

= 0.06

Sales tax price = 0.06 × 33125

                        = $ 1987.5

As given

A combined $50.00 license and registration fee.

Than

Total cost of the car  =   Cost of the car  + Sales tax price +  license and registration fee.

                                  =  $33125 + $ 1987.5 + $ 50

                                 = $35162.5

Therefore the total cost of the car be $35162.5 .

The coordinates of the vertices of quadrilateral JKLM are J(-3,2), K(4,-1), L(2,-5) and M(-5,-2).

Find the slope of each side of the quadrilateral and determine if the quadrilateral is a parallelogram.

Answers

Slope of JK=((-1)-2)/(4-(-3)=-3/7 Slope of KL=((-5)-(-1)/(2-4=2 Slope of LM=((-2)-(-5))/(-5-2)=-3/7 Slope of MJ=(2-(-2))/((-3)-(-5))= 2 JK is parallel to LM and KL is parallel to MJ. Therefore JKLM is a parallelogram.

please help. !!!!!!!!

Answers

Basically you find the data points and fill in the values. For Point J it is (2,4). They want you to do this: (2-4,4-6)...it then becomes (-2,-2).
So 
J: (-2,-2)
K: (-1, -4)
I: (-2, -5)
Those are your new points. I hope this helps love! :)

Can you help me solve this proof please?

Answers

Okay, so I haven't done proofs in a bit, so when it comes to proving that lines are congruent (or angles), you can try to prove that the triangles are congruent (CPCTC- Corresponding Parts of Congruent Triangles are Congruent). To prove that triangles are congruent, use SSS (Side side side- meaning all sides are congruent), ASA (angle side angle- meaning corresponding angle, then side, then angle are congruent), SSA (2 corresponding sides are congruent and an angle is also congruent) or SAS (you get it). We should use ASA, since obviously it says that ABD and CBD are congruent and obviously BD and BD are congruent and ADB aND CDB are congruent (both are 90degrees). So, we have proven that these traingles are congruent. Now use CPCTC as the last step, since AD and CD are corresponding parts of the triangles.

Question 25 the sum of three numbers is 79 . the second number is 9 less than the first. the third number is 2 times the first. what are the numbers?

Answers

I believe the numbers are 22, 13, and 44.

On which number line do the points represent negative 4 and 1 over 2 and +3?

Answers

A because if you look t is on +3 and r is on -41/2

The sum of two right angles always, sometimes, never results in a straight angle. Justify answer

Answers

Sometimes
I hope that helps u
Final answer:

Adding two right angles, each being 90 degrees, always results in a straight angle, which is 180 degrees, so this is always true.

Explanation:

The sum of two right angles always results in a straight angle. This can be justified with a basic understanding of angles in a flat plane. A right angle is 90 degrees and a straight angle is 180 degrees. So, if you add two right angles together (90 + 90), you get 180, which is the measure of a straight angle. Hence, this is always true, regardless of the vectors or other elements you are working with. It's also important to note that in broader geometric terms, this statement is also always true: two angles that add up to form a straight line (180 degrees) are referred to as supplementary angles.


Learn more about Angles here:

https://brainly.com/question/13954458

#SPJ3

The Garcias have​ $12,000 in a saving account. The bank pays​ 3.5% interest on saving​ accounts, compounded monthly. Find the balance after 3​ years?

Answers

The formula is
A=p (1+r/k)^kt
A the balance?
P present value 12000
R interest rate 0.035
K compounded monthly 12
T time 3years
A=12,000×(1+0.035÷12)^(12×3)
A=13,326.49

Hope it helps!
Final answer:

To find the balance after 3 years in a savings account with $12,000 and a 3.5% interest rate compounded monthly, we can use the formula for compound interest.

Explanation:

To find the balance after 3 years, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

where:

A is the final amountP is the principal amount (initial balance)r is the annual interest rate (as a decimal)n is the number of times interest is compounded per yeart is the number of years

Plugging in the given values:

P = $12,000r = 0.035n = 12 (monthly compounding)t = 3 years

The formula gives us:

A = $12,000(1 + 0.035/12)^(12*3)

Calculating this expression will give us the balance after 3 years.

Learn more about balance after 3 years here:

https://brainly.com/question/13669110

#SPJ2

Which inequality describes all the solutions to 5(3 - x) < -2x + 6?

A) x < -9
B) x > 3
C) x > 7

Answers

The inequality describes the solution to 5(3 - x) < -2x + 6 will be x > 3. The correct option is B.

What is inequality?

Inequality is the relationship between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.

The given expression 5(3 - x) < -2x + 6 will be solved as below:-

5(3 - x) < -2x + 6

15 - 5x < -2x + 6

-5x + 2x < -15 + 6

-3x < -9

x > 3

Therefore, the inequality describes the solution to 5(3 - x) < -2x + 6 will be x > 3. The correct option is B.

To know more about inequality follow

https://brainly.com/question/24372553

#SPJ1

Which of the following equations represents the perpendicular bisector of WX graphed below?

Thank you! :)

Answers

The coordinates of the 2 given points are W(-5, 2), and X(5, -4).

First, we find the midpoint M using the midpoint formula:

[tex]\displaystyle{ M_{WX}= (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2} )= (\frac{-5+5}{2}, \frac{2+(-4)}{2} )=(0, -1).[/tex]

Nex, we find the slope of the line containing M, perpendicular to WX. We know that if m and n are the slopes of 2 parallel lines, then mn=-1.

The slope of WX is [tex]\displaystyle{ m= \frac{y_2-y_1}{x_2-x_1}= \frac{2-(-4)}{-5-5}= \frac{6}{-10}= -\frac{3}{5} [/tex].

Thus, the slope n of the perpendicular line is [tex]\displaystyle{ \frac{5}{3} [/tex].

The equation of the line with slope [tex]\displaystyle{ n= \frac{5}{3} [/tex] containing the point M(0, -1) is given by:

[tex]\displaystyle{ y-(-1)=\frac{5}{3}(x-0)[/tex]

[tex]\displaystyle{ y+1= \frac{5}{3}x[/tex]

[tex]\displaystyle{ 3y+3=5x[/tex]

[tex]\displaystyle{ 5x-3y-3=0 [/tex]

Answer: 5x-3y-3=0

The length of each side of a square prism is ten ft

Answers

What is the question?

find the difference without using a calculator 201-72.35

Answers

the answer is 128.65
Here is your answer:

Since its decimal ma!e your equation look like this:

201.00
72.35-
Its going to make 99 because its zeros but add the 1
10-5=5
Then make another 9:
And another use the 2
10-3=7
10-2=8

Which will equals:

201-72.35=128.65
(Since there's 100. Decimal)

In isosceles triangle the length of the base is twice shorter than the length of a leg. The perimeter of this triangle is 50cm. Find the lengths of all sides.

Answers

Perimeter is sum of all 3 sides.  Isosceles triangle has two same sides and one short side.
If the short side is X, the other two sides would be 2X and 2X (since the short side is twice shorter)
P = x + 2x + 2x
50 = 5X
10 = X
Short side is 10, other two sides are 2(10) or 20.

Suppose you divide a 52 card deck into its four suits, and draw one card from each suit. what is the probability that you draw two red face cards and the two black aces?

Answers

Diamonds(red) 3 face cards out of 13
clover - only 1 black ace
hearts(red) 3 face cards out of 13
spade - only 1 black ace

3/13 * 3/13 *1/13 *1/13 = 9​/28561

Find the difference.

5wx2 − 2wx2

Answers

5wx2 − 2wx2
=3wx2 

hope it helps

Marcia can make 5 candles in an hour. Kevin can make only 4 candles in an hour, but he already has 7 completed candles. Explain to Marcia how she can use a system of equations to determine when she will have the same number of candles as Kevin. Use complete sentences.


Answers

m = marcia's total amount of candles

k = kevin's total amount of candles

h = amount of hours

so in 1hr she makes 5(1), in 2hrs she makes 5(2) and 3 she makes 5(3), in "h" hours she makes 5h.

kevin makes in 1hr 4(1), in 2hrs 4(2) and 3hrs 4(3), in "h" hours 4h.  But kevin already has 7 candles done from the day before, so the 4h is really additional to his 7 candles.

[tex]\bf \begin{cases} m=5h\\\\ k=4h+7 \end{cases}\impliedby \textit{when are they equal?}\qquad \stackrel{m}{5h}~~=~~\stackrel{k}{4h+7}\\\\ -------------------------------\\\\ 5h=4h+7\implies h=7[/tex]

14(z+3)=14z+21
Please state if it has no solutions, one solution, or infinitely many solutions.

Answers

There's no solutions

compute the following: 8C3 5C2

Answers

8C3=8*7*6/3*2*1=8*7=56
5C2=5*4/2*1=10

56×10= 560 so the answer is 560

Other Questions
HELP! I will give brainliest! Felicity is placing a rectangle in the coordinate plane. She knows that the longer side of the rectangle is 3 times its shorter side. She places the longer side on the x-axis.What coordinates should she assign to the top-right vertex of the rectangle? What the opposite of 30 degrees North latitude Identify the order in which the stages of perception occur. A.) Interpretation-Evaluation, Organization, Selection B.) Organization, Selection, Interpretation-Evaluation C.) Selection, Interpretation-Evaluation, Organization D.) Selection, Organization, Interpretation-Evaluation 20 POINTSIn the history of Southeast Asia, which best describes the condition of women there compared to women in the rest of Asia? Jordan loaned taylor $1,200 on march 15, 2009. taylor returned $1,260 on march 14, 2010. inflation was 2% over the 1-year period. what is the real interest rate that taylor paid?a.2%b.3%c.5%d.7% Which of the following statements is true about catalysts? (1 point)A. Catalysts slow down the rate of chemical reactions.B. All catalysts are enzymesC. Catalysts are used up during a chemical reaction.D. Catalysts lower the activation energy of a chemical reaction. Can a president veto a bill without sending it back to congress . Find 8 x 397. Show your work and explain why the strategy you chose work best with factors. Arrange the numbers in decreasing order. 76.342, 76.332, 76.232, 76.343 Which city was the last of the Qin conquests during the Period of Warring States?a.Zhaoc.Qib.Chud.Yan Which of the following is likely to happen to Christianity in the future? It will become an ethnic religion. Divisions between branches will diminish. Adherents will halt missionary practices. Smaller branches will cease to exist as the largest branches prosper. More branches will appear as new churches are founded. A concluding paragraph can be best described as ...-long-short-a reflection -one last important detail In which stage of the cell cycle was the nucleus with 6 picograms of dna? What cultural value does the motherly fairy most likely represent? In what way did Romantic poetry differ from earlier forms? Find the average annual depreciation for a car that cost $19000 three years ago and is now worth $12100 When a fuel burns, what determines whether co or co^2 will be produced? A pattern for 1 1 uniform uses 12 12 yards of material. Boleslaw wants to know how many yards are needed for 8 8 uniforms. Chantal wants to know how many yards she will need to make 15 15 uniforms. Your ipad is configured to do remote backups every day to icloud. what conditions are required for the icloud backup to take place? (select three.) Kepler used the observations and data of which scientist to formulate his laws of planetary motion? Steam Workshop Downloader